Microsoft spent years as OpenAI's biggest champion. Now it's quietly routing around it. Everyday AI in Excel and Outlook is shifting to Microsoft's own MAI models, replacing select OpenAI calls. Tens of thousands of weekly prompts already run in-house — a cost play. Takeaway: cheap 'good enough' models win high-volume tasks. Save frontier models for work that needs them. More at www.contentbuffer.com Route by task, or default to one model? #AI #Microsoft #OpenAI #AIStrategy #DevTools